Vacuum feed device



. oct. '16, 1923. 1,470,704

L.. H. WHEELER VACUUM FEED DEVICE Fled April 15. 1922 J5 ,Ed Y

,muil

m66.' '95j GWA; M wm fw Z593 Patented Oct. 16, 1923.

UNITED STATES LEONARD H. WHEELER, O'F CHICAGO, ILLINOIS, ASSIGNOR lTOSTEWARTrWARNER i NSIP,:E115l1)OBIIEIIEIR. CORIPQBATION, OF CHICAGO,ILLINOIS, A CORPORATION OF VIR- emu.

PATENT OFFICE VACUUM FEED DEVICE.

Application 1aed Aprn 15, 1922. serial N0.\553,195.

lTo all whom t may concern Beit known that I., LEONARD H. WHEELER, acitizen ,O the AUnited States, residino in the-city'of Chicago, in thecounty of @ook 5 and State/oflllinofs, have i-nvented certain `new, Aanduseful Improvements in Vacuum' Feed Devices, of which the following is aspecificaties., reference being had te the aecompanying drawings,forming a part thereof.

A The purpose of `this yinvention .is to provide a compact ferm ofvacuum-feed tank or apparatus adapted for lifting liquid, such `as.linuiduel, from a .low level Supply reservoir-to an elevatedreceptacleprovided as a `part ozf-the-.outlit-and frein which the liquid,i-sgperrnitted to oWby-gravity to the `point of use, euehestheCarbureter of an auto.- mobileengine. The device. .is particularlydesignedto inclndeaS-ight glass associated Withthe elevatedreeeptaeleand arranged t0 be mounted the: instrument beard-or vfront 'wall of the,drvers compartment of the vehicle for-indicating thexpresenee andquanmy of liquid inthe-elevatedehamben The inventiencenssts in variousfeatures 0f C011-V .Strutien and their combination, hereinafterdescribed.- and shown thev drawings, as in dcated, bythe claims.

In the. dratvingsa Figure i1 is a vertical sectional view of` a vacuumfeed device embodying this inven- .tiomsection being taken`substantially as` indicatedatline, 1 1, on Figure 2.

i Figure 2 isa transverse vertical section of the same taken- ,asindicated at line, 2.2 on Fig-ure 1. y f

`lligure 3 is a horizontal sectiontaken as `indicated at.v line, `idf-3,on Figure 1.

Figure 4 isa transverse section at right .anglesrto liigure `2VVasindicated at line, 4 4,

on Figure 1..` i :'Llie` principle.` of operation of they vacuum feeddevice embodying thisinvention is sub.- stanally Similar tot that o fthe .structure i shown in thelllebby Jay Patent. No.71,125,549dated-January 19, "1915, and needsfno elabo- `rate explanation. Thedevice comprises two receptacles or.- chambers, preferably disposed oneWithin theotherthe outer chamber, 1, serving as a temporary elevatedsupply tank for the liquid andthe inner chamber, 2, be-

ing subjected alternately to suction or partial vacuum and atmosphericpressure for drawing in liquid from a low level supply tank, not shown,`and discharging it to fthe outer chamber, ll. As shown, the device isdesigned for manufacture by die Vcasting the larger parts and thechamber, 2, is suspended within the chamber, 1, with a clearance space",3, serving topermit expansion of the liquid and vapor in the chamber,1,'upon` increase .of temperature.

F or mounting the device the chamber, 1, is provided with lugs, 4,Yapertured to receive suitable screws, 5, set intov the rear face of :thepartition Wall or instrument vboard `indicated atY A. A top plateorcover, 6, yisy yassembled with the chambers, land 2, Vby

means of fastening screws, 7, extending through the upper marginal'anges of said parts and said top plate has formed upon it passagesincluding the suction orzvacuum passage, 8, the liquidsupply intakepassage,

9, and, the atmospheric inlet, 10, as shown respectively in Figures 1, 4and2. The'suction passage, 8,is controlled by a valve,11,

and the atmospheric vent iscontrolled by a valve, 12, saidvvalves beingoperated by the change in level` of liquid in` the chamber, 3,

actingthrougha float, 13, slidably` guided upon a stem, 14, upon whichit has a limited range of travel between stops, 15 and 16.

Said stem is engagedat its upperend with a bifurcated lever member, 17Whose arms, 18, are fulcruined upon studs, 19, set into brackets, 2,0,which are formed integrally With the top plate, 6, and depend therefromwithin thechamber, 2.

The lever member, 17, is yieldingly` held at :either limit of its.rangey of swing b means of a coiled spring, 21fhitched to the lever atan aperture,22, thereimand anchored toal post, 23, vdepending fromthetop plate, V6,;l the bifurcated ,form` of' the `member, 17, permits thelspring,. 21, to be accommodated, between its arms, 18,l and to passabove orvbelovv the axis, ofthe. fulcrum studs, 19, as the lever swingsup or down. At the portion remote from the fulcrum axis, the member, 17,is apertured to engage the stems, 11'and 12-,-of the suction andatmosphere valves respectively. l

The lower end of the flcat stem,.14, is guided in a suitable stampedspider, 24, pressed into arecess in the bottom of the chamber, 2. Uponreversal of the valvesthat is, closing of the suction valve, 11, andopening of 'the atmosphere valve, 12, the liquid in thecha'mber, 2, isdischargedV therefrom through a nipple, 25, formed below thev spider,24, and exteriorly threaded to receive a flanged valve seat member, `26,over which the valve cage, 27, is tightly fitted. During the fillingperiod lof the chamber, 2, the discharge opening is closed by a diskvalve, 28, which is held to the seat, 27 ,by the suction in the chamber,22, but upon cessation of the suction said valve drops through a shortdistance limited by the length of its-supporting lugs, 29, which arepositioned to rest upon the iii-turned flange, 30, of the cage, 27,during discharge .of the liquid from the chamber, 2, into thechamber, 1. From the chamber, 1, the liquid will flow by gravity asrequired, a suitable connecting nipple, 31, being formed in the bottomwall of said chamber vfor attachment of'a connecting pi'pe.- Y YPreferably, 1 to prevent the in-flowing liquid entering at 9, frominterfering with the operation of the float, 13, said liquid isconducted past the float by a pipe, 32, to the lower portion of thechamber, 2, below the float, 13),v as indicated in Figures 3 and 4. Itshould be understood that thev outer chamber, 1, is kept constantly atatmospheric pressure, being vented through theyspace, .3, which maycommunicate with the atmospheric intake, 10, by way of a pipe or duct,33, as shown in Figure 2. Y Y

To apprise the operator of the engine of 'the presence and quantity ofliquid in the chamber, 1, the latter is preferably formed with acylindrical flange, 34, extending from the flat wall of the chamberhaving the Vmounting lugs, 4, for securing it againstthe partition orinstrument panel, A. The outer end of the flange, 34, is threaded/tcreceive a bezel ring, 35, for clamping a sight glass Vor window, 36,over the end of the flange with suitable packing interposed toi renderit liquid-tight while thus permitting the liquid Vin the chamber to beviewed at all times.

I claim:- 1. In a vacuum feed device comprising a 'vacuum 'chamber intowhich liquid is drawn by suction and a reserve chamber into which Y itis periodically releasedy for gravity flow to the point of use, saidouter chamber being formed with a 'laterally projecting flange adapted.togprotrude throughan opening in a supporting partition wall, dashboard, or

the like, and a transparent closure secured to said Vflange forming asight opening through which the contents of the' 'reserve chamber may beobserved.V

2. In the combination defined in claiml 1, said flange being annular andthe closure comprising a circular glass fitted against the outer end ofthe flange with a packing cushion interposed, anda bezel ring screwedonto the flange for clamping the glass in place. y

In a vacuum Vfeed device including a vacuum chamber having a suctionport and an atmosphere port, a valve for each port and means foractuating said valves simultaneously, comprising a bifurcated leverhaving its two' armsfulcrumed on a pair of laterally supported brackets;a pull spring hitched tothe lever between its arms andextendingbetweenthe fulcrum brackets to an anchorage beyond them; meansfor connecting both valves tothe lever at a distance from` Aits fulcrumaxis, f and a float in the chamber operatively engaged with the leverfor actuating the valves.

4. In the comb natipn defined in claim 3, said valves being connectedtothe lever both `at the same side of the fulcrum axis of said lever. Y

5., In the combination defined in claim 4, said valves being connectedto the lever at jequal distances from its fulcrumaxis adjacent eachother at the/'same sidelof said axis.

r6. In the combination defined in claimr4, said lever having atransverse partconnectingV the two arms Vwhich extend to fulcrumbrackets, a float inthe chamber having'a stem engaging the jjsaidtransverse portion of the lever, 'and the valves being connected to saidport-ionatsubstantially the same disthreaded annular flange engaged withsaid nipple, a valve disk disposed below the seat and pro-vided withdepending lugs, and a valve cage comprising a sleeve portionjttedtightly over 4the seat member and formed with an in-turned flangeextending under f said seat in spaced relation theretd for engaging thelugs of the valve disk to' support the latter and limit itsjrange ofmovement l away from its seat.'V

8. In av vacuum feed device comprisingl aV vacuum chamber into whichliquid is drawn by suction, andV a reserve chamber into which itperiodically discharged for gravity flow to the point of use, :a

discharge valve for the vacuum chamber spaced therefromV under the lugsof the valve comprising a vdownwardly facing seat; disk for supportingthe valve when unseaited y a, valve diskl disposed below the seat havingand limiting its range of movement. Y 10 depending lugs and :i Valvecage comprising In ltestimony whereof, I have hereunto set t -5 a sleeveportion extending around the seat m hand ait Chicago, Illinois, this12th day member and formed with an iii-turned flange o April, 1922.

y disposed in a plane below said seat andy LEONARD VVI-IEELERl il Y

